Enable Calibration - QuadTech Sentry Plus Series Instruction Manual

4.3.2 Enable Calibration

The instrument should be powered up for a minimum of 30 minutes prior to calibration to
ensure maximum stability. With the Sentry Plus Series instrument in standby status ([STOP]
button previously pressed and no warning lights flashing) remove the Calibration seal over the
hole labeled "CAL' on the front panel and push the recessed switch to the IN position.
The unit is in STAND BY status.
Press [F3] = MENU.
Press [F2] = DOWN three times until CALIBRATION is highlighted (backlit).
Press [F3] = SELECT to choose calibration function.
Display will prompt for a password.
Press [A] [A] [A] [B] [ENTER]
Cal Step 1: 'ACV 5kV Offset (50V)' is displayed on the screen.
NOTE
The 'Calibration is OFF' display may occur if the CAL recessed switch has not been pressed IN
prior to entering Calibration function.
Figure 4-1: Calibration Password Prompt
NOTE:
When in the Calibration Routine:
Pressing [UP] or [DOWN] scrolls through the calibration steps.
Pressing [START] initiates the calibration of the particular step
Pressing [INC.] or [DEC.] adjusts the Standard Value
Pressing [ENTER] accepts the calibration value.
Pressing [STOP] completes calibration of the particular step.
Service & Calibration Page 79 of 85